body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background-color: #000;
  overflow: hidden;
  margin: 0;
}

#chartdiv {
  width: 100%;
  height: 99vh;
  minHeight: 800px;
}